• Proceedings of the Korean Association of Geographic Inforamtion Studies Conference
• /
• 1998.11a
• /
• pp.20-25
• /
• 1998

In order to support effective decision-making related to inter-sewage planning, this study proposes the spatial distribution method of inter-sewage treatement area using spatial analysis of GIS, Communication system of database, spatial interaction of Gravity model. Evalution Indexs are consist of economic, social/political and environmental condition value which are explained by the analysis of AHP algorithm ,based on opinion of related experts. Network module in Arc/Info is applied in order to find out minimum pipeline root in Miho river watershed, one of the sub-basin of Geum river basin. This value also is utilized for the construction of cost decay function in gravity model.

• Journal of Science and Technology Studies
• /
• v.14 no.2
• /
• pp.49-84
• /
• 2014

Social-impact is getting more emphasized for the R&D program evaluation. Qualitative indicators such as 'Productive-interactions' and 'Social-impact of R&D' have been included for the evaluation criteria in USA, UK and Netherlands. Recently, Korean government also realizes importance of the social-impact, so 'Follow-up evalution' is launched in order to evaluate not only technical-impact but also social-impact. In this paper, possibilities and challenges of social-impact analysis are reviewed. Furthermore, successful cases from the leading overseas countries are benchmarked to have policy implications.

• Korean Journal of Microbiology
• /
• v.27 no.4
• /
• pp.430-435
• /
• 1989

Dextranase and glucose-osidase was investigated as an anti-plaque agent and a component of dentifrice. In vitro synthesis of the water-insoluble glucan was decreased with increasing amount of dextranase and glucose-oxidase. Dextranase was effective on the decrease of viable S. mutans, and the formation of plaque decreased. But it is not effective on the degradatio of plaque. As a research for addition of enzyme to the dentifrice components, we formulated the Model Dentifrice for stabilization of enzyme. At the Model Dentifrice, we confirmed the stability of enzyme by evalution of activity for a long time.

• Journal of the Korean Society of Clothing and Textiles
• /
• v.28 no.8
• /
• pp.1048-1056
• /
• 2004

Hydrophilicities of finished cotton fabrics were evaluated in respect of moisture regain and wickability. Changes in internal structure were determined using X-ray diffraction and surface changes in degraded samples were observed through a microscopy. Activated sludge test, soil burial test and enzyme hydrolysis were employed to evaluate the biodegradabilities. In addition, correlation analysis was done between biodegradability and the factors affecting biodegradability in each evalution methods. It was shown that hydrophilicities of silicone finished specimens were lower than that of untreated cotton and decreased in a row of PDMS(polydimethyl siloxane : -CH$_3$)＞AFS(amino functional siloxane ; -C$_3$H$_{6}$ NHC$_2$H$_4$NH$_2$)＞MHPS(methylhydrogen polysiloxane : -H, Cat : (C$_{17}$ H$_{35}$ COO)$_2$Zn) Although, moisture regain of mercerized cotton was higher than those of the others, wickability was shown to be lower. It was represented that crystalinities of cotton fabrics decreased by the silicone treatment. In activated sludge test and soil burial test, biodegradabilities of silicone treated specimens were lower than that of untreated cotton, where specimens of higher biodegradability exhibited higher biodegradability except mercerized ones. The results from enzyme hydrolysis, however, showed somewhat different tendency in that biodegradability was more closely related with the crystallinities of fabrics. It can be thought that enzyme hydrolysis is carried out for short time, physical accessibility becomes important.

• Journal of Korean Society of Steel Construction
• /
• v.20 no.1
• /
• pp.165-173
• /
• 2008

In order to promote the practicality of high-rise steel buildings, the development of structural system which have the better fire resistance, the changeable plan, and the quality control of construction with general composite beams is needed. In this research, new semi-slim floor which the defect of general slim floor was complemented was evaluated to investigate the concrete integration with slim-flor beam and the flexural performance. 5 simply supported semi-slim floor beam tests were performed with parameters; structural form of slab support beam, slab thickness, with or without web opening, and shear connection. Experimental results showed that all specimen s had good ductile behavior.

• Transactions of the Korean Society of Mechanical Engineers
• /
• v.13 no.5
• /
• pp.938-946
• /
• 1989

Using the CT specimen of carbon steel(SM45C), we estimated the fatigue crack propagation behavior in stable crack propagation range. Furthermore the fatigue crack propagation rate, Acoustic Emission(AE) count rate, and fractography characteristics were also compared among others. The following results were confirmed by experimental observation. Near-threshold stress intensity factor range(.DELTA. $K_{th}$) is influenced by stress ratio but not at the upper limit of stable crack propagation range. As stress intensity factor range(.DELTA.K) and(or) stress amplitude increase (s), both crack propagation rate(da/dN) and AE count rate(dn/dN) increase. Effective stress intensity factor range(.DELTA. $K_{off}$) determined from the crack closure point measurement by AE method is useful for the evaluation of fatigue crack propagation rate. Fractography in stable crack propagation range showed striation, and agreed with the crack propagation rate obtained either by experiment of by the results of microscopic measurements.s.

• Publications of The Korean Astronomical Society
• /
• v.23 no.2
• /
• pp.53-63
• /
• 2008

Korea Astronomy and Space Science Institute (KASI), direct decendant of Korea National Astronomy Observatory, has been publishing Korean Astronomical Almanac since in 1976. The almanac contains essential data in our daily lives such as the times of sunrise, sunset, moonrise, and moonset, conversion tables between luni-solar and solar calendars, and so forth. So, we are planning to register Korean astronomical almanac data for national Standard Reference Data(SRD), which is a scientific/technical data whose the reliablity and the accuracy are authorized by scientific analysis and evalution. To be certificated as national SRD, reference data has to satisfy several criteria such as traceability, consistency, uncertainty, and so on. Based on similarity among calculation processes, we classified astronomical almanac data into three groups: Class I, II, and III. We are planning to register them for national SRD in consecutive order. In this study, we analyzed Class I data which is aimed to register in 2009, and presented the results. Firstly, we found that the traceability and the consistency can be ensured by the usage of NASA/JPL DE405 ephemeris and by the comparsion with international data, respectively. To evaluate uncertainty in Class I data, we solved the mathematical model and determined the factors influencing the calculations. As a result, we found that the atmospheric refraction is the main factor and leads to a variation of ${\pm}16$ seconds in the times of sunrise and sunset. We also briefly review the histories of astronomical almanac data and of standard reference data in Korea.

• Journal of Gifted/Talented Education
• /
• v.23 no.2
• /
• pp.133-160
• /
• 2013

The purposes of this research are to develop and to evaluate the teacher training program for enhancing scientific creative problem-solving abilities. For this purpose, by considering previous studies, this study suggested 'scientific creative problem solving process'. In the course of elementary teacher program development, the present study followed Instructional Systems Development stages, where Kirkpatrick's four-step evaluation model was applied for a quality of evaluation. As a result of evaluation, it was found that teachers' recognition of competency to teach the scientific creative problem solving process was increased. In addition, teachers' evalution of the program was positive and their willingness to apply it to the field was found high, which indicated that the training program's applicability to schools would be positive.

• International Journal of Highway Engineering
• /
• v.13 no.3
• /
• pp.111-119
• /
• 2011

The noise prediction model, KRON-2006, in South Korea has been developed for obtaining the average noise level. The model is based on an outdoor sound propagation method based on ISO9613 and ASJ Model-1998 and supports the analysis of the linear noise source, such as highway, for obtaining Leq. Because of that, the model can't obtain Lmax, Lmin from the time series noise profile based on traffic at every moment. In order to address this problem, the real time noise prediction model based on traffic simulation using GIS model and algorithm is proposed. It can predict the vehicle point noise level based on vehicle type, speed generated from traffic simulation by using headway and obtain Lmax, Lmin as integrating the noise profile generated from it at every moment. An evalution of the noise prediciton model using field measurements finds good agreement between predicted and measured noise levels at 1m, 8m, 15m from curb of the near side lane.

• Journal of the East Asian Society of Dietary Life
• /
• v.21 no.5
• /
• pp.698-705
• /
• 2011

In this study, brown rice and germinated brown rice which has various medical action and excellent functionality, was used together with Jeung-pyun to compare and analyze the changes according to the amount 50, 100%. This study is intended to be used for the healthy food and spread to that was executed to find out the merchandising potential of this Jeung-pyun. The Jeung-pyun was added to brown rice and germinated brown rice of moisture content was 50.23~51.70% the similar to content. For chromaticity to L(lightness) value, a(redness) value and b(yellowness) value, L value of GBR2 was low at 58.84. a value was showed the highest GBR at 0.64. For texture, Hardness was showed the highest GBR2. Springiness was showed the highest BR2. Chewiness was showed the highest Control at 4.33. As for adhesiveness, there was showed the highest GBR2 at 0.30 and showed significant difference between samples. Overall-acceptability was the order of good in the estimated: GBR1>BR2>BR1>GBR2>C. Based on this study, from the physico-chemical and sensual perspective, For the preference of GBR1 was most preferred for flavor, color and taste, sensory evalution and considered suitable the best method for adding brown rice and germinated brown rice into Jeung-pyun.